Submission #624169

#	Time	Username	Problem	Language	Result	Execution time	Memory
624169		prashant_th18	Knapsack (NOI18_knapsack)	C++17	73 / 100	1083 ms	3924 KiB

knapsack

#ifdef LOCAL
    #define _GLIBCXX_DEBUG
#endif
#include "bits/stdc++.h"
using namespace std;
const int MOD = 1000000007;
typedef long long ll;
typedef long double ld;
#define sz(s) ((int)s.size())
#define all(v) begin(v), end(v)
#define ff first
#define ss second

mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());

// *-> KISS*
int solve() {
    ll s, n; cin >> s >> n;
    vector<array<ll, 3>> v(n); // value, weight, number
    for (int i = 0; i < n; i++) {
        cin >> v[i][0] >> v[i][1] >> v[i][2];
    }
    vector<vector<ll>> dp(2, vector<ll>(s + 1, 0));
    for(int i = 1; i <= n; ++i) {
        for(int j = 0; j <= s; ++j) {
            dp[i % 2][j] = dp[(i - 1) % 2][j];
            for(int k = 0; k <= v[i - 1][2]; ++k) {
                ll ex = v[i - 1][0] * k, wi = v[i - 1][1] * k;
                if(wi > j) break;
                dp[i % 2][j] = max(dp[i % 2][j], ex + dp[(i - 1) % 2][j - wi]);
            }
        }
    }
    cout << dp[n % 2][s];
    return 0;
}
int32_t main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    bool test = false;
    int TET = 1;
    if(test) cin >> TET;
    cout << fixed << setprecision(6);
    for (int i = 1; i <= TET; i++) {
        #ifdef LOCAL
        	cout << "##################" << '\n';
        #endif

        if (solve()) {
            break;
        }
        cout << '\n';
    }
    #ifdef LOCAL
    	cout << endl << "finished in " << clock() * 1.0 / CLOCKS_PER_SEC << " sec" << endl;
    #endif
    return 0;
}
// -> Keep It Simple Stupid!

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 24 / 24
• Subtask 5: 0 / 27